TIERNEY, B. (1964). The crisis of church and state 1050 - 1300. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)TIERNEY, Brian. The Crisis of Church and State 1050 - 1300. New Jersey: Prentice-Hall, 1964.
Lua MLA (9ú heag.)TIERNEY, Brian. The Crisis of Church and State 1050 - 1300. Prentice-Hall, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.